5000 lux is equal to 5000 lumen per square meter. Since lux measures illuminance (luminous flux per unit area), converting lux directly to lumen requires knowing the area illuminated.
Lux measures how much luminous flux hits a given surface area, while lumen quantifies total luminous flux emitted by a source. If the area is 1 square meter, 5000 lux means 5000 lumens falling on that area.
Conversion Tool
Result in lumen:
Conversion Formula
The conversion from lux to lumen depends on the area illuminated. Lux (lx) is luminous flux per square meter, lumen (lm) is total luminous flux. The formula is:
Lumen (lm) = Lux (lx) × Area (m²)
This formula works because lux tells how much light strikes each square meter, so multiply by the total area you want to find the total light emitted over that area.
Example:
- Given 5000 lux and area of 1 m²
- Lumen = 5000 lx × 1 m² = 5000 lm
Conversion Example
- Convert 3000 lux to lumen for an area of 2 m²:
- Multiply 3000 lx by 2 m²
- Lumen = 3000 × 2 = 6000 lm
- Convert 7500 lux to lumen for 0.5 m²:
- 7500 lx × 0.5 m² = 3750 lm
- Convert 10000 lux to lumen over 1.2 m²:
- 10000 × 1.2 = 12000 lm
- Convert 4500 lux for 0.8 m²:
- 4500 × 0.8 = 3600 lm
- Convert 6000 lux over 1.5 m²:
- 6000 × 1.5 = 9000 lm
Conversion Chart
This chart shows lux values between 4975.0 and 5025.0 converted to lumen assuming a 1 m² area. You can read across rows to find the lumen value for given lux.
| Lux (lx) | Lumen (lm) |
|---|---|
| 4975.0 | 4975.0 |
| 4980.0 | 4980.0 |
| 4985.0 | 4985.0 |
| 4990.0 | 4990.0 |
| 4995.0 | 4995.0 |
| 5000.0 | 5000.0 |
| 5005.0 | 5005.0 |
| 5010.0 | 5010.0 |
| 5015.0 | 5015.0 |
| 5020.0 | 5020.0 |
| 5025.0 | 5025.0 |
Related Conversion Questions
- How many lumens does 5000 lux produce on a 2 square meter surface?
- Is 5000 lux equal to 5000 lumens for all lighting conditions?
- What area is assumed when converting 5000 lux to lumen?
- Can you convert 5000 lux to lumens without knowing the surface size?
- How does the conversion change if the area is 0.5 m² instead of 1 m²?
- What is the lumen output for 5000 lux over 3 square meters?
- Does a lux value of 5000 always mean the same lumen value?
Conversion Definitions
Lux: Lux is the measure of illumination intensity on a surface, defined as one lumen per square meter. It quantifies how much visible light reaches a specific area, used to assess brightness in environments and for lighting design.
Lumen: Lumen measures the total amount of visible light emitted by a source per second. It indicates brightness perceived by the human eye, regardless of the distance or area over which the light spreads.
Conversion FAQs
Why can’t lux be directly converted to lumen without area?
Lux represents luminous flux spread over an area, so the same lux number on a bigger area means more total lumens. Without knowing the surface area, you can’t determine the total luminous output in lumen from lux alone.
Does changing the distance from light source affect lux to lumen conversion?
Yes, because lux decreases with distance as the same luminous flux spreads over a larger area. Lumen remains constant since it’s total light output, but lux depends on how concentrated the light is on a surface.
Are lux and lumen measurements affected by light color?
Lumen accounts for human eye sensitivity to different wavelengths, so color affects perceived brightness. Lux measures illuminance at a surface and is influenced by light intensity and wavelength, but conversion formulas remain unchanged.
Can lumen values be higher than lux values?
Lumen values can be higher or lower than lux depending on area size. For small areas, lumen can be less than lux because lux is per square meter. For larger areas, lumen totals increase proportionally to area size.
How accurate is converting lux to lumen for irregular surfaces?
Conversion assumes uniform illumination and flat surfaces. Irregular shapes or uneven lighting cause inaccuracies, because lux may vary across the surface, making total lumen calculation less precise.